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GREYUIT [131]
2 years ago
5

Find [-4/5]×3/7×15/16×[-14/9]​

Mathematics
1 answer:
dangina [55]2 years ago
8 0

The given expression is \frac{-4}{5} \times \frac{3}{7}  \times \frac{15}{16}  \times (\frac{-14}{9}).

We need to simplify the given expression.

<h3>What is a rational number?</h3>

In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q.

Now group the rational numbers (\frac{-4}{5}\times \frac{15}{16} ) \times (\frac{3}{7}\times (\frac{-14}{9}))

=(\frac{-4}{16}\times \frac{15}{5} ) \times (\frac{3}{9}\times (\frac{-14}{7}))

=(\frac{-1}{4}\times \frac{3}{1} ) \times (\frac{1}{3}\times (\frac{-2}{1}))

=(\frac{-3}{4} ) \times (\frac{-2}{3})=\frac{1}{2}

Therefore, the simplified value of the given expression is \frac{1}{2}.

To learn more about the rational numbers visit:

brainly.com/question/17450097.

#SPJ1

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the angle of depression is measured from the top of a 43 ft tower to a reference point on the ground. its value is found to be 6
Dafna1 [17]
An angle of depression is the angle of a slant to the upper horizontal line. The official definition is: <span>the </span>angle<span> formed by the line of sight and the horizontal plane for an object below the horizontal.

Thus, for this problem, we must use trigonometry. The tower is perpendicular to the upper horizontal and the ground, so after we draw a line connecting the points we get 90 - 63 = 27, which is one of the angles in the right triangle.

The other angles are ninety and 63. We wish to find the measure of the bottom of the triangle, so we use tangent which includes both legs.

Therefore, tan(27)=x/43. Plugging this into a calculator, we get roughly 21.9.

Hope this helped! It probably sounds a lot harder than it actually is without a picture.</span>
5 0
3 years ago
Sally invests $300 in a lawn mowing business to buy a mower and other supplies. she charges $20 for each lawn she mows. write an
Deffense [45]
Y=20x-300

it's -300 because she pays 300 for her supplies and mower.
4 0
3 years ago
Read 2 more answers
PLEASE HURRY NO LINKS PLEASEEEEEE
Maksim231197 [3]

Answer:

64

Step-by-step explanation:

-4(m-n)^2

when m=3 and n=-1

-4(3-(-1))^2=

-4(3+1)^2=

-4(4)^2=

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correct answer is -64

7 0
3 years ago
Solve the equation. Justify each step
Wewaii [24]

Given

9(h-4) = 5(3h-2)

Distribute 9 on the left hand side and 5 on the right hand side (distributive property of addition)

9h-36=15h-10

Add 36 to both sides (addition property of equality)

9h=15h+26

Subtract 15h to both sides (subtraction property of equality)

-6h=26

Divide both sides by -6 (division property of equality)

h=-\dfrac{26}{6}=-\dfrac{13}{3}

3 0
3 years ago
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What is the supplement of 12
Triss [41]
168 degrees is the supplement of 12.
6 0
3 years ago
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